I'm 38 and have been weight lifting on and off for around 20 years, but never was very successful at it. I think I maxed around a 225 bench at one point, but now I'm much less than that.
Anyway, I just discovered HIIT training, which has made a world of difference. I'm actually gaining strength and mass every time I work out, and I'm eating less now than I did on SS.
SS works for some people, but I think it depends on your genetics. Or maybe your right and I'm not eating enough. However, my system just can't handle that much food without GI problems. Also, I was getting a big fat belly along with it.
HIIT training has been working for me and after 2 months the gains are still there and better than those I was getting on SS. There also is more evidence that it works than SS has, I believe. Like I posted on another thread, checkout the boise experiment: http://boiseexperiment.com/HeavyDuty/?page_id=308
Anyway, each to his own.